Coach Screw M8 X 100Mm Hex Head Loose

Coach bolts, also known as carriage bolts, derive their name from their historical use in securing the wooden components of horse-drawn carriages. These bolts feature a shallow domed head, which can be square, circular, or hexagonal, serving two key purposes: preventing loosening from one side to maintain structural integrity and deterring the bolt from being pulled through wood. The domed head necessitates unique installation and removal techniques, using tools like wrenches, spanners, or pliers for turning the bolt, rather than axial methods.